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Alinara [238K]
3 years ago
11

A mass is measured as 6.2 kg in one experiment and as 6.20 kg in another. in what way do these measurements differ​

Physics
1 answer:
schepotkina [342]3 years ago
8 0

Answer:

They are both same

Explanation:

6.20=6.2kg

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if 500 watts hit the surface of a solar panel every second and it generates 150 watts every second, how efficient is it?
alukav5142 [94]
The electrical efficiency is defined as the ratio between the useful power output and the total power input:
\epsilon =  \frac{P_{out}}{P_{in}}

In our problem, P_{out} = 150 W (power generated by the solar panel) and P_{in} = 500 W (power hitting the surface of the solar panel), therefore the efficiency of the panel is
\epsilon =  \frac{150 W}{500 W}=0.3
which corresponds to 30%.
4 0
3 years ago
Two gratings A and B have slit separations dA and dB, respectively. They are used with the same light and the same observation s
77julia77 [94]

Answer:

a) dB / dA = 2 ,

b) Network B     Network A

        2                         1

        4                         2

        6                         3

Explanation:

a) The expression for grating diffraction is

         d sin θ = m λ

where d the distance between two slits, λ the wavelength and m an integer that represents the diffraction range

In this exercise we are told that the two spectra are in the same position, let's write the expression for each network

Network A

m = 1

         sin θ = 1 λ / dA

Network B

m = 2

        sin θ = 2 λ / dB

they ask us for the relationship between the distances, we match the equations

            λ / dA) = 2 λ / dB

            dB / dA = 2

         

b) let's write the equation of the networks

         sin θ = m_A  λ / dA

         sin θ = m_B  λ / dB

we equalize

           m_A  λ/ dA = m_B  λ / dB

we use that

          dB / dA = 2

           m_A 2 = m_B

therefore the overlapping orders are

Network B     Network A

   2                         1

   4                         2

    6                       3

4 0
3 years ago
The principal limitation of wind power is unpredictability.True or False
geniusboy [140]
True because you cannot see the wind
8 0
3 years ago
Read 2 more answers
Select the correct answer.
Vesna [10]

Answer:

A. continental-oceanic convergent

Explanation:

I knew it couldn't be B because it's oceanic and <em>continental</em>, not oceanic and <em>oceanic</em>.

Next, I noticed the word <em>convergent</em>, which implies "coming together" to me.

I looked it up and noticed the term <em>convergent</em> referred to a plate boundary where a plate slips under (<em>subducted</em>) another, so I knew it was A.

Hopefully, this helps you understand the question better. Have a great day!

3 0
3 years ago
Electromagnets are created by
Scrat [10]
I electromagnets, the magnetic field is turned off when there is no induced current. So, electromagnets act as magnets only when current is induced in an insulated wire wrapped around a material mage of ferromagnetic material such as iron core rotating in a magnetic field.

So, option D is the correct one.



If you wanna know more about electromagnets, write down in comments {:
6 0
3 years ago
Read 2 more answers
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